Pen holder



FIG. 1 is a perspective view of the pen holder showing my new design;

FIG. 2 is a view taken from the opposite end to that shown in FIG. 1.

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines are for the purposes of illustrating portions of the pen holder and form no part of the claimed design. 

CLAIM The ornamental design for a pen holder, as shown and described. 